Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10406958 | Journal of Electrostatics | 2018 | 7 Pages |
Abstract
The current-voltage curves in wire-to-cylinder arrangement are investigated for positive corona discharge varying the electrode gap and the emitter radius. Two well-known expressions are used to relate the corona current as a function of the voltage. Then, the dependencies of the equation parameters on geometrical characteristics of the electrodes are studied. The main results are as follows: 1) the dimensional parameter K shows a directly dependence with the emitter radius whereas an inversely dependence is observed with electrode distance; 2) the inception voltage V0 increases with both emitter radius and electrode gap; 3) the exponent m varies inversely with emitter radius and it is proportional to the electrode gap. Based on the experimental results, a derived empirical formula for positive corona current discharge is proposed as a function of the applied voltage and the geometrical characteristics of the electrodes. Finally, the empirical equation is examined with data of previous studies to assess its validity.
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Authors
Mario Sánchez, Antonio J. Conesa,